242 entries under tough topic. ×
| vital(adjective, energetic, powerful, lively) | |
| zippy(adjective, sharp, energetic, powerful) | |
| dense(adjective, person, set, body, hard) | |
| dependable(adjective, good, honest, solid) | |
| doughty(adjective, powerful, bold, spirited) | |
| healthful(adjective, strength, fit, active) | |
| indomitable(adjective, hard, great, firm) | |
| iron(adjective, hard, power, firm) | |
| robustious(adjective, force, power, strength) | |
| rough(adjective, hard, intense, violent) | |
| snappy(adjective, sharp, energetic, powerful) | |
| thriving(adjective, sound, fit, happy) | |
| unshakable(adjective, strong, hard, secure) | |
| valorous(adjective, determined, noble, bold) | |
| bitter(adjective, hard, sharp, intense) | |
| bouncing(adjective, energetic, powerful, lively) | |
| dogged(adjective, firm, energetic, determined) | |
| heroic(adjective, great, powerful, noble) | |
| indefatigable(adjective, sound, fit, firm) | |
| normal(force, energy, fit, fresh) |
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| APA | Smart Define. (2016). strong thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/strong/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "strong thesaurus" https://smartdefine.org/strong/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, strong thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/strong/thesaurus/synonyms>. |
| MLA | Smart Define. "strong thesaurus" 1 April 2016. Web. 29 September 2026. <https://smartdefine.org/strong/thesaurus/synonyms> |